Please accept our apology for the troubles.
First please try turning your device off and on and try using Azar again.
If the problem still persists, go to the Friends tab and click on the Settings icon. Then click on Help center and submit a request with the following information.
1) The trouble you are experiencing with Azar in detail
2) Check if your phone's basic camera application is working
3) Send the picture downloaded in your camera album after taking a picture from effects